You use an average of 43 muscles for a frown and you use an average of 17 muscles for a smile, and they say every two thousand frowns creates one wrinkle.
Baby robins eat 14 worms per day and parent robins make around 100 food visits to the nest every day!
The first man to die during planning & construction of the Hoover Dam was the father of the last man to die during its construction. December 20, 1922 with J.G. Tierney a Bureau of Reclamation employee who was part of a geological survey and drowned when he fell from a barge. Exactly 13 years later, in 1935, his son Patrick W. Tierney, fell to his death from an intake tower.
You will have to walk 80 kilometers for your legs to equal the amount of exercise your eyes get daily.